Though Mackenzie of "Teen Mom 3" has been trying everything in her power to make her relationship work, her fiancé, Josh, continues to pull further and further away from her. After completely ignoring her texts and calls during the latest episode, Mackenzie was at her wit's end, and in this sneak peek of the next episode, she brings her mom, Angie, in for reinforcement in hopes that they'll be able to shake whatever's bothering Josh out of him.

After the mother and daughter share a prayer in the car to give them the strength to confront Josh, they enter his home and get right to the point. "Since you won't answer phone calls," Angie begins, "and [Mackenzie]'s not a good talker, I had to come see you." Having just woken up from a nap on the couch, Josh is groggy, but doesn't exactly look surprised by the intervention. He quickly attempts to quell Mackenzie's suspicions -- until he's caught in a lie about where he's been for the past few weeks. Apparently, Josh hasn't been going to bull-riding practice like he's claimed, confirming Mackenzie's fear that he's been avoiding her and Gannon altogether to spend time with his friends.

"Do you just want to be done with me forever?" she asks with tears in her eyes, to which Josh doesn't have an answer.

Check out the clip, and don't miss an all-new "Teen Mom 3" Monday night at 10/9c.